The notation Old Style or (OS) is sometimes used to indicate a date in the Julian Calendar (which is used by churches on the "Old Calendar"). The notation New Style or (NS), indicates a date in the Revised Julian calendar (which is used by churches on the "New Calendar").
Abbot-bishop of the Monastery of Lobbes on the Sambre and founder of Aulne and Wallers, also in present-day Belgium. His work as a bishop in Flanders was of great importance.
Of the family of the Counts of Saxony in Germany, he donated his land to the monastery of Einsiedeln in Switzerland where his two sons, Cuno and Ulric, were monks. He went to live as a hermit at a village near Mitternach.
A monk at Deerhurst in Gloucestershire in England, then Abbot of Bath, he became Bishop of Winchester in 984 and thirtieth Archbishop of Canterbury in 1005. He was greatly loved by his flock and during the Danish invasion of 1011 he was urged to pay a ransom. He refused, was taken prisoner and martyred in Greenwich, the only Orthodox Archbishop of Canterbury to be martyred. His relics were enshrined in St Paul's in London and later in Canterbury.[17]
The Roman Martyrology. Transl. by the Archbishop of Baltimore. Last Edition, According to the Copy Printed at Rome in 1914. Revised Edition, with the Imprimatur of His Eminence Cardinal Gibbons. Baltimore: John Murphy Company, 1916. p.110.
Rev. Sabine Baring-Gould (M.A.). "S. Vincent of Calahorra, M. (A.D. 303.)." In: The Lives of the Saints. Volume the Fourth: April. London: John C. Nimmo, 1897. pp.227-228.
The Autonomous Orthodox Metropolia of Western Europe and the Americas. St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p.30.
The Autonomous Orthodox Metropolia of Western Europe and the Americas. St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p.30.
April 19. Latin Saints of the Orthodox Patriarchate of Rome.
The Roman Martyrology. Transl. by the Archbishop of Baltimore. Last Edition, According to the Copy Printed at Rome in 1914. Revised Edition, with the Imprimatur of His Eminence Cardinal Gibbons. Baltimore: John Murphy Company, 1916. p.110.
(in Greek) Συναξαριστής. 19 Απριλίου. ecclesia.gr. (H Εκκλησια Τησ Ελλαδοσ).
Russian Sources
(in Russian)2 мая (19 апреля). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).